Readme.md: mention that MK must be up-to-date

Until we depend on MK, we need to ensure it's up-to-date using brew. This was not specified earlier and led to https://github.com/ooni/probe-engine/issues/315
2020-02-17 11:38:59 +01:00 · 2020-02-17 11:38:59 +01:00 · 4a9034d907
commit 4a9034d907
parent 040bee0ee6
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--- a/Readme.md
+++ b/Readme.md
@ -93,6 +93,9 @@ a specific version of psiphon and of its dependencies.

 ## Releasing

+Make sure you have updated dependencies. Specifically, make sure
+you update homebrew to get the latest Measurement Kit. Then:
+
 ```
 ./build.sh release
 ```